Search U.S. government technical reports digitized or harvested by TRAIL.
Recovery and utilization of oil from oil-field waste emulsion :a preliminary report
Abating stream pollution by recovering waste oil from steel rolling mills
Waste lubricating oil research :some innovative approaches to reclaiming used crankcase oil
Waste lubricating oil research:an investigation of several re-refining methods
Recovery of principal metal values from waste hydroprocessing catalysts